This is a sole source procurement for PCI Mezzanine Cards (PMC) for the AN/SPS-73 radar system, with the Government intending to negotiate only with Red Rock Technologies, Inc. of Tempe, Arizona. The requirement is for 200 cards with an option for 200 more within two years of award. The justification is that the cards are a critical, qualified OEM component, and using another vendor would cost approximately $1,000,000 and two years to requalify a replacement. The procurement specialist is requesting a dissolution of the small business set-aside for this commercial, firm-fixed-price action. While capability statements may be submitted for consideration, the Government's decision not to compete the contract is discretionary.